oceanodroma leucorhoa

Mother \Moth"er\ (m[u^][th]"[~e]r), n. [OE. moder, AS. m[=o]dor;
   akin to D. moeder, OS. m[=o]dar, G. mutter, OHG. muotar,
   Icel. m[=o][eth]ir, Dan. & Sw. moder, OSlav. mati, Russ.
   mate, Ir. & Gael. mathair, L. mater, Gr. mh`thr, Skr.
   m[=a]t[.r]; cf. Skr. m[=a] to measure. [root]268. Cf.
   {Material}, {Matrix}, {Metropolis}, {Father}.]
   1. A female parent; especially, one of the human race; a
      woman who has borne a child.
      [1913 Webster]

   2. That which has produced or nurtured anything; source of
      birth or origin; generatrix.
      [1913 Webster]

            Alas! poor country! . . . it can not
            Be called our mother, but our grave.  --Shak.
      [1913 Webster]

            I behold . . . the solitary majesty of Crete, mother
            of a religion, it is said, that lived two thousand
            years.                                --Landor.
      [1913 Webster]

   3. An old woman or matron. [Familiar]
      [1913 Webster]

   4. The female superior or head of a religious house, as an
      abbess, etc.
      [1913 Webster]

   5. Hysterical passion; hysteria. [Obs.] --Shak.
      [1913 Webster]

   {Mother Carey's chicken} (Zool.), any one of several species
      of small petrels, as the stormy petrel ({Procellaria
      pelagica}), and Leach's petrel ({Oceanodroma leucorhoa}),
      both of the Atlantic, and {Oceanodroma furcata} of the
      North Pacific.

   {Mother Carey's goose} (Zool.), the giant fulmar of the
      Pacific. See {Fulmar}.

   {Mother's mark} (Med.), a congenital mark upon the body; a
      birthmark; a naevus.
      [1913 Webster]